Ms. Codex 1233 is a pretty amazing manuscript. Originally written in the early-to-mid 15th century, it was used continuously through the end of the 18th century. Written in Cologne and probably used by the canons in the Cologne Cathedral, this notated breviary (a liturgical book containing the canonical hours - daily prayers - with musical notation) includes notes and additions made up to 1794. It also includes splatters of candle wax and one page that got a little too close to a candle!
Hildegard von Bingen !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
she was a nun and a scientist and a musician and poet and invented her own language and alphabet. which i think is pretty neat.
this drawing is based on a specific medieval illustration: (link)
Ms. Codex 1063 is a 15th century book of hours produced in England, probably London, perhaps for a member of a religious confraternity or community. The musical notation in the Office of the Dead is unusual.